Coin-controlled electromedical battery.



No. 674.336. I Patented May l4, l90l.

J. a. HABTMAN. COIN CONTROLLED ELECTBUMEDIGAL BATTERY.

(Application filed Jan. 24, 1900. Rengwed Oct. 17, 1900.)

(No Model.) 7 2'Sheats$heet Z0116? e .55 e5,

Patented may I4, I91.

2 Sheets-Sheet z.

(No ModeL) UNITED I STATES PATENT OFFICE.

JACOB G. HARTMAN, OF BALTIMORE, MARYLAND.

COIN-CONTROLLED ELECTROMEDICAL BATTERY.

SPECIFICATION forming m of Letters Patent No. 674,336, dated May14,1901.

Application filed January 24, 1900. Renewed October 17, 1900. serial No.33,405. (No model.)

To all whom it may concern.-

Be it known that I, JACOB G. HARTMAN, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Coin- Controlled ElectromedicalBatteries; and Ido' hereby declare the following to be a full, clear,

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to machines of the class in which personsdepositing a suitable coin in a slot may receive an electric current fora predetermined period of time.

The apparatus involves an induction-coil, a battery making circuitthrough both helices of the coil and including in both circuitsconducting-handles electrically connected by the person of the user, andmeans for making and breaking both circuits at proper times and forvarying at will the intensity of the induced current.

In the drawings, Figure 1 is a rear elevation of the apparatus, the rearportion of a certain inclosing case or box being removed. Fig. 2 is asimilar front elevation-of the box, showing the handles, coin-slot, andindicator. Figs. 3, 4, 5, 6, 7, S, and 9 are detail views, hereinafterreferred to.

In the views, A represents a normally locked wooden case having in itsfront a coinslot A, a glass-covered indexA andprovided withconducting-handles A A whose spindles A A pass through heavy sleeves Avspindle normally lying at one limit of a parby a set-screw D, thuspreventing the withdrawal of the spindle. The inner end of this spindlehas a bearing in a conducting-post E, which carries an insulated springcontactpiece E. A segment D of a pulley is formed integrally with thehub'D and normally lies out of contact with the piece E, but in suchposition that as the handle A is rotated the side face of the segmentstrikes and rubs along this piece until the limit of the handlesrotation is reached. When the handle is released after rotation, aspring E instantly restoresit to normal position. Upon the plate 0 ispivoted alever F, notched below to engage the end face F of an annularshoulder F upon one face of the segment D and provided with a variablecounterweight F to hold it in engagement. Upon the opposite end of thelevel-Fa coin-receiving cup F isso mounted that it may rotate about theend portion of the lever as an axis, yet will normally be held uprightby gravity, which swings its side against the front wall of the case,or, mother words, the line of gravity ofth'e cup lies considerablynearer the case than its axis of rotation.

Coins inserted in the slot A are guided into this cup by a chute G, anda coin of proper weight will overbalance the counterweight F tilt'thelever, and leave the knob free to 1'0- tate As soon as-rotation carriesthe end face F past the notch in the lever the shoulder F supports thelever and relocking' is impossible until the knob returns to normalposition. Another lever H is pivoted at H to the same plate 0 to swingin a vertical plane passing between the lever F and the case front. Thislever is curved upward immediately over the spindle A and its non-curvedportion H normally rests upon the flattened (not shown) in the rear wallof the boxv As soon as the non-flattened portion of the hub is made tosupport thelever the latter ceases to rise and is held stationary duringthe further rotation of the knob.

The electric current in this apparatus is supplied by a battery I and anordinary commercial induction-coil l, the primary circuit being from thebattery through the primary helix of the coil, wire 1 handle A person ofthe user, handle A spindle A", segment D piece E, and wire I and thesecondary circuit being through the secondary helix and the same routeto the spindle A, thence through the post E, wire J, spring contactpieceK upon the front of the case, post K, a

and wire K Circuit being completed by seizing both knots and bringingthe segment D into contact with the contact-piece E, it is maintaineduntil the knobs are released or. until at the expiration of apredetermined period of time it is automatically broken at the post K bydevices to be described. To thus break it, I provide a smallspring-motor, which is wound by the turning of the knob and which thenafter running for a certain time breaks the circuit by pushing thespring K from the post K.

The motor itself iswithout novelty, being operated by the power of aspring L acting upon a shaft L. Upon this shaft is fixed a collar L,having an arm L which the shaft rotates strikes the spring contact-pieceand pushes it from the post K, breaking the secondary circuit. It alsohas a short arm L to which is pivoted a pawl L whose weight nor mallyholds it against a stop U, which limits the swing ofthe pawl upon itspivot in one di- 1 small angle,winding the spring L thereon an d lcarrying the arm L to some distance from the contact-piece Kand leavingthe latter in contact with the post.

ordinary fan M limiting the speed of movement. At the expiration of apredetermined time-as, forlexample, one minutethe arm will push thespring from the post and the motor will be arrested by a stop 0, fixedto the motor-frame in the path of a projection N l The current beingthus inupon the collar. terrupted and the handles being released, the

spring E returns the rotary knob to normal.

position, allowing both levers F H to fall. As thelever F descendsgravity restores the COiHliGCBPtHJClG on its end to upright position, i

and as the lever H approaches its lower limit it tilts the pawl andpasses it, the stop L properly limiting the tilting movement. That thestrength of the induced current may in- The free end of the I As soon asthe lever has released the pawl thespring begins to return the arm Lslowly toward the spring K, the i crease with the rotation of thehandle, and thus the amount of rotation may be indicated, a cord P isattached to the periphery of the segment D and also to the periphery ofa drum Q, fixed to the inner portion of the shaft R of the index A andfrom the same drum a cord S passes over a pulley S and is attached tothe sleeve of the induction-coil. Obviously the index will be rotatedand the sleeve will be withdrawn in proportion to the rotation of theknob-spindle.

From the construction it is plain that a proper coin holds the knobunlocked until the knob has been turned and current has been obtained,so that no mistakes can be made by users, and while a user may have thecurrent for the full time he must use it continuously. If he makes thecurrent too strong and must release the knob before the lapse of thefull tin1e, generation ceases and so much current is saved. Nor is thereany possibility of one or more persons obtaining current for more thanthe proper time for one coin. In other words, less but not more than themaximum may be taken.

As the motor runs but a very brief time, only a very short spring isused, and although usually unaware of the fact the user necessarilywinds that spring as much as it unwound during the last preceding use.

Changes in details of construction may be made withoutpassing the limitsof my invention, and I do not therefore desire to limit my claims to theforms chosen forillustration.

What I claim is 1. In apparatus of the class described, the combinationwith a suitable case having conducting external handles one of which isrotatable butnormally locked, of a battery within the case arranged tomake circuit through the handles, means whereby rotation of one handlemay make and break thecircuit, an induction-coil having its primaryhelixinthe battery-circuit and its secondary terminals connected with thehandles, respectively, means whereby a coin unlocks the rotary handle,and devices arranged to automatically break the secondary circuit at afixed interval after the closing of the battery-circuit.

2. In apparatus of the class described, the combination with a fixed anda normally locked rotary conducting-handle, of "a bat- .tery making anormally open circuit through to rest upon said lever to overbalance thesame and unlock the handle, means whereby rotation of the handledischarges the coin from the lever.

4. In apparatus of the class described, the combination with theconducting knobs or handles one of which is rotatable, of a curvedindex, and a battery and an induction-coil both making circuit throughthe person grasping said handles, and a cord connected with both theindex and the sleeve of the induction-coil and wound by rotation of thehandle, whereby the rotation of the handle governs the current and showsits intensity.

5. The combination with asuitable casing, provided with externalconducting-handles one of which is rotatable but normally locked, ofcurrent-generating devices Within the easing arranged to make circuitthrough the handles on the closing of a break within the casing and theconnecting of the handles through the person of the user, means forunlocking the handle, means whereby the rotation of the handle closesthe break within the casing, a motor, means whereby the rotation of thehandle puts the motor in operation, and means whereby the motor inoperating breaks the circuit after a predetermined interval.

In testimony whereof I affix my signature in presence of two witnesses.

JACOB G. HARTMAN.

Witnesses:

WILLIAM E. SOHLOEGEL, GEORGE H. DOBSON.

